The purposes of this paper are to examine the effects of synchronic description in distinguishing between interference and integration in cases of language contact, and to suggest alternative methods of description suitable for the analysis of systems in motion. The "synchronic fallacy" is defined here as the belief that one can describe a language as if at any one point in time its code were stable. The author first considers the implications of "synchronic fallacy" to see how it relates to the distinction between integration and interference. He then studies the possible ways of measuring integration and analyzes the quantitative relationship between integration and availability with sample measurements. While the author does not feel that this may be the only way out of the dilemma, he hazards the following general conclusions on the analysis of integration as distinct from interference: (1) conventional synchronic analysis is unsuited to the description of mixed and rapidly changing codes; (2) code integration is relative; (3) its relativity can be measured; and (4) interference can be stated in terms of this relative integration. [Not available in hardcopy due to marginal legibility of original document.] (AMM)